Create a task timer with Lambda and Amazon SNS - Amazon Step Functions
Step 1: Create the state machineStep 2: Run the demo state machine
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Create a task timer with Lambda and Amazon SNS

This sample project creates a task timer. It implements an Amazon Step Functions state machine that implements a Wait state, and uses an Amazon Lambda function that sends an Amazon Simple Notification Service (Amazon SNS) notification. A Wait workflow state state is a state type that waits for a trigger to perform a single unit of work.

Note

This sample project implements an Amazon Lambda function to send an Amazon Simple Notification Service (Amazon SNS) notification. You can also send an Amazon SNS notification directly from the Amazon States Language. See Integrating services with Step Functions.

This sample project creates the state machine, a Lambda function, and an Amazon SNS topic, and configures the related Amazon Identity and Access Management (IAM) permissions. For more information about the resources that are created with the Task Timer sample project, see the following:

For more information about how Amazon Step Functions can control other Amazon services, see Integrating services with Step Functions.

Step 1: Create the state machine

  1. Open the Step Functions console and choose Create state machine.

  2. Choose Create from template and find the related starter template. Choose Next to continue.

  3. Choose how to use the template:

    1. Run a demo – creates a read-only state machine. After review, you can create the workflow and all related resources.

    2. Build on it – provides an editable workflow definition that you can review, customize, and deploy with your own resources. (Related resources, such as functions or queues, will not be created automatically.)

  4. Choose Use template to continue with your selection.

    Note

    Standard charges apply for services deployed to your account.

Step 2: Run the demo state machine

If you chose the Run a demo option, all related resources will be deployed and ready to run. If you chose the Build on it option, you might need to set placeholder values and create additional resources before you can run your custom workflow.

  1. Choose Deploy and run.

  2. Wait for the Amazon CloudFormation stack to deploy. This can take up to 10 minutes.

  3. After the Start execution option appears, review the Input and choose Start execution.

Congratulations!

You should now have a running demo of your state machine. You can choose states in the Graph view to review input, output, variables, definition, and events.